Performance of Pd-Ag/Al2O3 catalysts prepared by the selective deposition of Ag onto Pd in acetylene hydrogenation

Ji Hoon Lee, Seok Ki Kim, In Young Ahn, Woo Jae Kim, Sang Heup Moon

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

The performance of Ag-promoted Pd/Al2O3 catalysts, which were prepared by the selective deposition of Ag onto Pd using a surface redox (SR) method, during acetylene hydrogenation was compared with that of catalysts prepared by impregnation. The Pd surface was more effectively modified with Ag added by SR, even when small amounts of Ag were added. The catalyst prepared by SR showed a higher ethylene selectivity than the one prepared by impregnation, because SR allowed both the preferential deposition of Ag on the low-coordination sites of Pd and a greater electronic modification of Pd by Ag.

Original languageEnglish
Pages (from-to)1251-1254
Number of pages4
JournalCatalysis Communications
Volume12
Issue number13
DOIs
StatePublished - 26 Jul 2011

Keywords

  • Acetylene hydrogenation
  • Ag
  • Ethylene selectivity
  • Pd
  • Surface redox method

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